Anatomy Of A PrototypePurple_Dave: Yep, that's EVIL TAHU showing off his new toys. One of these days I'll have to explain to him that none of this stuff actually belongs to him...

There were quite a few differences between the prototype RURU and the standard issue version, so I've posted comparison shots showing the interior and exterior views. Some of the details are a bit subtle, so the full-size images have notes explaining all of the differences. Oh, and if you don't know what "knurled" means, if you've got a coin with lots of little ridges on the edge, the edge is knurled.